23681436 has 48 divisors (see below), whose sum is σ = 57200640. Its totient is φ = 7620480.

The previous prime is 23681431. The next prime is 23681473. The reversal of 23681436 is 63418632.

It is a super-2 number, since 2×23681436² = 1121620822044192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23681397 and 23681406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23681431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62295 + ... + 62673.

It is an arithmetic number, because the mean of its divisors is an integer number (1191680).

Almost surely, 2^23681436 is an apocalyptic number.

It is an amenable number.

23681436 is an abundant number, since it is smaller than the sum of its proper divisors (33519204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23681436 is a wasteful number, since it uses less digits than its factorization.

23681436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 552 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 23681436 is about 4866.3575700929. The cubic root of 23681436 is about 287.1679786512.

The spelling of 23681436 in words is "twenty-three million, six hundred eighty-one thousand, four hundred thirty-six".